import type { DatabaseHandle } from './db.js';
import type { ParsedEdge } from '../types.js';
/**
 * Append an edge. Edges are never de-duplicated by (source, target, context);
 * the graph layer handles any collapsing. `targetSubpath` captures a `#heading`
 * or `^block` suffix from a wiki-link (without the `#` / `^` itself) — null
 * for bare references. Naming matches Obsidian's LinkCache.subpath / Dataview
 * Link.subpath.
 */
export declare function insertEdge(db: DatabaseHandle, edge: ParsedEdge): void;
/**
 * All edges leaving `nodeId`.
 */
export declare function getEdgesBySource(db: DatabaseHandle, nodeId: string): Array<ParsedEdge & {
    id: number;
}>;
/**
 * All edges arriving at `nodeId`.
 */
export declare function getEdgesByTarget(db: DatabaseHandle, nodeId: string): Array<ParsedEdge & {
    id: number;
}>;
/**
 * Count of edges leaving `nodeId`.
 */
export declare function countEdgesBySource(db: DatabaseHandle, nodeId: string): number;
/**
 * Count of edges arriving at `nodeId`.
 */
export declare function countEdgesByTarget(db: DatabaseHandle, nodeId: string): number;
/**
 * Distinct outgoing-neighbour summaries. Title falls back to the target id
 * when the neighbour is a dangling link (no node row exists for it yet).
 */
export declare function getEdgeSummariesBySource(db: DatabaseHandle, nodeId: string): Array<{
    nodeId: string;
    title: string;
}>;
/**
 * Distinct incoming-neighbour summaries (back-links).
 */
export declare function getEdgeSummariesByTarget(db: DatabaseHandle, nodeId: string): Array<{
    nodeId: string;
    title: string;
}>;
/**
 * Delete every edge leaving `nodeId`. Used when re-indexing a file — the
 * pipeline wipes old outgoing edges and re-emits from the parsed note.
 */
export declare function deleteEdgesBySource(db: DatabaseHandle, nodeId: string): void;
/**
 * Delete every edge arriving at `nodeId`. Used when a node itself is removed.
 */
export declare function deleteEdgesByTarget(db: DatabaseHandle, nodeId: string): void;